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US 11,028,281 B2Granted
Free radical polymerizable water-based inkjet compositions
AssigneeSun Chemical Corporation
InventorsAndrew Balch, Derek Ronald Illsley
Life of this patent
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Abstract
Described herein are free radically polymerizable aqueous inkjet compositions that include water, a water-soluble or water-dispersible component polymerizable by free radical polymeration, and one or more water-soluble organic solvents in compliance with following Formula I: Σ(Xn·Hn·Bn)≤ρ (I), where ρ is 2,000,000. The variables of the formula are defined herein. Also described are printed articles that include the inkjet compositions of the disclosure. The inkjet compositions dry rapidly while remaining fluid during printing, thereby avoiding clogging in the print head.
Claims21
A free radically polymerizable water-based inkjet composition comprising:
- water;
- a water-soluble or water-dispersible component polymerizable by free radical polymerization;
- and
- one or more water-soluble organic solvents in compliance with following Formula I:
- Σ(Xn·Hn·Bn)≤ρ (I)
- wherein each individual n represents a water-soluble organic solvent present in the composition;
- n is an integer≥1;
- Xn is the amount on a weight basis of each water-soluble organic solvent present in the composition expressed as 100(wn/wtotal);
- wn is the weight of a water-soluble organic solvent present in the composition represented by a value of n;
- wtotal is the weight of the ink jet composition;
- Hn is Heat of Vaporization of each water-soluble organic solvent (J/g);
- Bn=Boiling Point of each water-soluble organic solvent (° C.);
- Σ=sum of the multiplication products of Xn, Hn and Bn for each water-soluble organic solvent present in the composition;
- and
- ρ is 2,000,000;
- wherein the total amount of water-soluble organic solvents in the composition is 10 wt % to 40 wt %, based on the total weight of the composition;
- and wherein the composition comprises less than or equal to 2.5 wt % water-soluble organic solvents having boiling points of 150° C. or greater and heats of vaporization of equal to or greater than 400 J/g.
14 more elements
A method for printing an article, consisting essentially of:
- a) providing a substrate;
- b) providing a free-radically polymerizable water-based inkjet composition, wherein the free-radically polyerizable water-based inkjet composition comprises:
- i. water;
- ii. a water-soluble or water-dispersible component polymerizable by free radical polymeration;
- and
- iii. one or more water-soluble organic solvents in compliance with following Formula I:
- Σ(Xn·Hn·Bn)≤ρ (I)
- wherein each individual n represents a water-soluble organic solvent present in the composition;
- n is an integer≥1;
- Xn is the amount on a weight basis of each water-soluble organic solvent present in the composition expressed as 100(wn/wtotal);
- wn is the weight of a water-soluble organic solvent present in the composition represented by a value of n;
- wtotal is the weight of the ink jet composition;
- Hn is Heat of Vaporization of each water-soluble organic solvent (J/g);
- Bn=Boiling Point of each water-soluble organic solvent (° C.);
- Σ=sum of the multiplication products of Xn, Hn and Bn for each water-soluble organic solvent present in the composition;
- and
- ρ is 2,000,000;
- c) applying the composition of step (b) to the substrate of step (a);
- d) removing at least a portion of the water and organic solvent from the composition applied on the substrate;
- and
- e) energy curing the composition on the substrate;
- wherein:
- i. the total amount of water-soluble organic solvents in the composition is 10 wt % to 40 wt %, based on the total weight of the composition;
- and wherein the composition comprises less than or equal to 2.5 wt % water-soluble organic solvents having boiling points of 150° C. or greater and heats of vaporization of equal to or greater than 400 J/g;
- ii. the substrate is selected from the group consisting of vinyl, acrylic, polystyrene, polycarbonate, polyester, polyethylene terephthalate, glycol modified polyethylene terephthalate, poly(olefin), nylon, polypropylene, polyethylene, cellulose acetates, poly(lactic acid), aluminum, aluminum oxide, silicon oxide, poly(vinylidene dichloride), and nitrocellulose;
- and
- iii. the article is a food packaging article.
24 more elements
Dependencies are inferred from the claim text.